./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:16:15,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:16:15,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:16:15,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:16:15,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:16:15,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:16:15,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:16:15,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:16:15,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:16:15,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:16:15,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:16:15,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:16:15,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:16:15,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:16:15,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:16:15,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:16:15,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:16:15,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:16:15,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:16:15,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:16:15,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:16:15,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:16:15,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:16:15,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:16:15,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:16:15,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:16:15,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:16:15,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:16:15,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:16:15,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:16:15,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:16:15,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:16:15,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:16:15,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:16:15,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:16:15,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:16:15,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:16:15,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:16:15,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:16:15,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:16:15,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:16:15,765 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2022-11-16 12:16:15,800 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:16:15,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:16:15,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:16:15,805 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:16:15,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:16:15,806 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:16:15,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:16:15,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:16:15,808 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:16:15,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:16:15,809 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:16:15,809 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:16:15,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:16:15,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:16:15,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:16:15,810 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:16:15,811 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:16:15,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:16:15,811 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:16:15,811 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:16:15,812 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:16:15,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:16:15,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:16:15,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:16:15,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:16:15,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:16:15,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:16:15,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:16:15,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:16:15,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2022-11-16 12:16:16,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:16:16,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:16:16,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:16:16,176 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:16:16,178 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:16:16,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2022-11-16 12:16:16,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/data/3f2c53ada/97275cd5016e4f71bb22e483d249a363/FLAG91900bae3 [2022-11-16 12:16:16,789 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:16:16,789 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2022-11-16 12:16:16,814 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/data/3f2c53ada/97275cd5016e4f71bb22e483d249a363/FLAG91900bae3 [2022-11-16 12:16:17,103 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/data/3f2c53ada/97275cd5016e4f71bb22e483d249a363 [2022-11-16 12:16:17,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:16:17,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:16:17,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:16:17,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:16:17,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:16:17,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:17,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7267bac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17, skipping insertion in model container [2022-11-16 12:16:17,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:16:17" (1/1) ... [2022-11-16 12:16:17,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:16:17,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:16:17,601 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2022-11-16 12:16:17,622 WARN L570 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-11-16 12:16:17,623 WARN L570 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-11-16 12:16:17,624 WARN L570 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-11-16 12:16:17,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:16:17,659 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-16 12:16:17,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d012a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:17, skipping insertion in model container [2022-11-16 12:16:17,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:16:17,660 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 12:16:17,662 INFO L158 Benchmark]: Toolchain (without parser) took 553.71ms. Allocated memory is still 127.9MB. Free memory was 83.8MB in the beginning and 97.2MB in the end (delta: -13.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:16:17,662 INFO L158 Benchmark]: CDTParser took 0.79ms. Allocated memory is still 127.9MB. Free memory is still 102.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:16:17,663 INFO L158 Benchmark]: CACSL2BoogieTranslator took 550.98ms. Allocated memory is still 127.9MB. Free memory was 83.5MB in the beginning and 97.2MB in the end (delta: -13.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:16:17,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79ms. Allocated memory is still 127.9MB. Free memory is still 102.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 550.98ms. Allocated memory is still 127.9MB. Free memory was 83.5MB in the beginning and 97.2MB in the end (delta: -13.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 860]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:16:19,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:16:19,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:16:19,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:16:19,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:16:19,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:16:19,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:16:19,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:16:19,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:16:19,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:16:19,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:16:19,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:16:19,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:16:19,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:16:19,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:16:19,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:16:19,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:16:19,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:16:19,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:16:19,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:16:19,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:16:19,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:16:19,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:16:19,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:16:19,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:16:19,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:16:19,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:16:19,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:16:19,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:16:19,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:16:19,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:16:19,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:16:19,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:16:19,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:16:19,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:16:19,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:16:19,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:16:19,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:16:19,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:16:19,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:16:19,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:16:19,854 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2022-11-16 12:16:19,890 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:16:19,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:16:19,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:16:19,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:16:19,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:16:19,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:16:19,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:16:19,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:16:19,893 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:16:19,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:16:19,894 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:16:19,894 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:16:19,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:16:19,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:16:19,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:16:19,895 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:16:19,895 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:16:19,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:16:19,896 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:16:19,896 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:16:19,896 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:16:19,897 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:16:19,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:16:19,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:16:19,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:16:19,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:16:19,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:16:19,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:16:19,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:16:19,902 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:16:19,902 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:16:19,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:16:19,902 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2022-11-16 12:16:20,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:16:20,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:16:20,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:16:20,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:16:20,352 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:16:20,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2022-11-16 12:16:20,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/data/0f25b9e19/a6a8247f9d424ea9a593f2de1d2d2920/FLAG74f09f485 [2022-11-16 12:16:21,031 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:16:21,031 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2022-11-16 12:16:21,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/data/0f25b9e19/a6a8247f9d424ea9a593f2de1d2d2920/FLAG74f09f485 [2022-11-16 12:16:21,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/data/0f25b9e19/a6a8247f9d424ea9a593f2de1d2d2920 [2022-11-16 12:16:21,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:16:21,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:16:21,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:16:21,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:16:21,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:16:21,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:16:21" (1/1) ... [2022-11-16 12:16:21,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b032612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:21, skipping insertion in model container [2022-11-16 12:16:21,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:16:21" (1/1) ... [2022-11-16 12:16:21,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:16:21,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:16:21,928 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2022-11-16 12:16:21,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:16:22,013 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 12:16:22,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:16:22,066 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2022-11-16 12:16:22,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:16:22,102 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:16:22,130 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2022-11-16 12:16:22,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:16:22,200 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:16:22,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:22 WrapperNode [2022-11-16 12:16:22,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:16:22,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:16:22,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:16:22,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:16:22,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:22" (1/1) ... [2022-11-16 12:16:22,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:22" (1/1) ... [2022-11-16 12:16:22,295 INFO L138 Inliner]: procedures = 235, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 116 [2022-11-16 12:16:22,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:16:22,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:16:22,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:16:22,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:16:22,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:22" (1/1) ... [2022-11-16 12:16:22,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:22" (1/1) ... [2022-11-16 12:16:22,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:22" (1/1) ... [2022-11-16 12:16:22,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:22" (1/1) ... [2022-11-16 12:16:22,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:22" (1/1) ... [2022-11-16 12:16:22,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:22" (1/1) ... [2022-11-16 12:16:22,333 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:22" (1/1) ... [2022-11-16 12:16:22,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:22" (1/1) ... [2022-11-16 12:16:22,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:16:22,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:16:22,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:16:22,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:16:22,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:22" (1/1) ... [2022-11-16 12:16:22,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:16:22,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:22,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:16:22,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:16:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 12:16:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:16:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2022-11-16 12:16:22,417 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2022-11-16 12:16:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:16:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 12:16:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:16:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:16:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2022-11-16 12:16:22,418 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2022-11-16 12:16:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-11-16 12:16:22,418 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-11-16 12:16:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:16:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:16:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:16:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-16 12:16:22,423 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-16 12:16:22,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:16:22,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:16:22,602 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:16:22,604 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:16:23,606 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:16:23,622 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:16:23,622 INFO L300 CfgBuilder]: Removed 41 assume(true) statements. [2022-11-16 12:16:23,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:16:23 BoogieIcfgContainer [2022-11-16 12:16:23,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:16:23,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:16:23,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:16:23,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:16:23,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:16:21" (1/3) ... [2022-11-16 12:16:23,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762170d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:16:23, skipping insertion in model container [2022-11-16 12:16:23,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:22" (2/3) ... [2022-11-16 12:16:23,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762170d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:16:23, skipping insertion in model container [2022-11-16 12:16:23,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:16:23" (3/3) ... [2022-11-16 12:16:23,640 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2022-11-16 12:16:23,667 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:16:23,667 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2022-11-16 12:16:23,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:16:23,736 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7df3fcd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:16:23,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2022-11-16 12:16:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 117 states have (on average 2.1623931623931623) internal successors, (253), 206 states have internal predecessors, (253), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-16 12:16:23,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:16:23,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:23,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:16:23,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:23,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:23,756 INFO L85 PathProgramCache]: Analyzing trace with hash 378924727, now seen corresponding path program 1 times [2022-11-16 12:16:23,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:23,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760422275] [2022-11-16 12:16:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:23,770 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:23,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:23,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:23,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:16:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:23,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:16:23,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:23,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:23,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:23,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760422275] [2022-11-16 12:16:23,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760422275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:23,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:23,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:16:23,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316781826] [2022-11-16 12:16:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:23,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:16:23,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:23,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:16:23,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:16:23,995 INFO L87 Difference]: Start difference. First operand has 216 states, 117 states have (on average 2.1623931623931623) internal successors, (253), 206 states have internal predecessors, (253), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:24,035 INFO L93 Difference]: Finished difference Result 212 states and 234 transitions. [2022-11-16 12:16:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:16:24,038 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 12:16:24,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:24,047 INFO L225 Difference]: With dead ends: 212 [2022-11-16 12:16:24,047 INFO L226 Difference]: Without dead ends: 210 [2022-11-16 12:16:24,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:16:24,052 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:24,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:16:24,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-16 12:16:24,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-11-16 12:16:24,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 115 states have (on average 1.7826086956521738) internal successors, (205), 199 states have internal predecessors, (205), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:16:24,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 232 transitions. [2022-11-16 12:16:24,104 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 232 transitions. Word has length 5 [2022-11-16 12:16:24,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:24,105 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 232 transitions. [2022-11-16 12:16:24,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:24,105 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 232 transitions. [2022-11-16 12:16:24,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:16:24,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:24,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:16:24,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:24,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:24,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:24,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:24,319 INFO L85 PathProgramCache]: Analyzing trace with hash 378924789, now seen corresponding path program 1 times [2022-11-16 12:16:24,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:24,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790435902] [2022-11-16 12:16:24,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:24,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:24,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:24,322 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:24,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 12:16:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:24,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:16:24,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:24,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:16:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:24,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:24,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:24,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790435902] [2022-11-16 12:16:24,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790435902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:24,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:24,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:16:24,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552088582] [2022-11-16 12:16:24,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:24,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:16:24,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:24,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:16:24,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:16:24,472 INFO L87 Difference]: Start difference. First operand 210 states and 232 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:24,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:24,779 INFO L93 Difference]: Finished difference Result 229 states and 251 transitions. [2022-11-16 12:16:24,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:16:24,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 12:16:24,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:24,782 INFO L225 Difference]: With dead ends: 229 [2022-11-16 12:16:24,782 INFO L226 Difference]: Without dead ends: 229 [2022-11-16 12:16:24,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:16:24,784 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 69 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:24,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 314 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:16:24,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-16 12:16:24,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 207. [2022-11-16 12:16:24,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 115 states have (on average 1.7565217391304349) internal successors, (202), 196 states have internal predecessors, (202), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:16:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 229 transitions. [2022-11-16 12:16:24,801 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 229 transitions. Word has length 5 [2022-11-16 12:16:24,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:24,801 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 229 transitions. [2022-11-16 12:16:24,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:24,802 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 229 transitions. [2022-11-16 12:16:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:16:24,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:24,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:16:24,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-16 12:16:25,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:25,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:25,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:25,016 INFO L85 PathProgramCache]: Analyzing trace with hash 378924790, now seen corresponding path program 1 times [2022-11-16 12:16:25,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:25,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776853722] [2022-11-16 12:16:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:25,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:25,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:25,018 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:25,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:16:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:25,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:16:25,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:25,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:16:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:25,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:25,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:25,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776853722] [2022-11-16 12:16:25,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776853722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:25,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:25,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:16:25,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083429881] [2022-11-16 12:16:25,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:25,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:16:25,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:25,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:16:25,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:16:25,151 INFO L87 Difference]: Start difference. First operand 207 states and 229 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:25,569 INFO L93 Difference]: Finished difference Result 205 states and 227 transitions. [2022-11-16 12:16:25,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:16:25,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 12:16:25,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:25,572 INFO L225 Difference]: With dead ends: 205 [2022-11-16 12:16:25,572 INFO L226 Difference]: Without dead ends: 205 [2022-11-16 12:16:25,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:16:25,573 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 67 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:25,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 306 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:16:25,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-16 12:16:25,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2022-11-16 12:16:25,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 115 states have (on average 1.7304347826086957) internal successors, (199), 193 states have internal predecessors, (199), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:16:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 226 transitions. [2022-11-16 12:16:25,602 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 226 transitions. Word has length 5 [2022-11-16 12:16:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:25,602 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 226 transitions. [2022-11-16 12:16:25,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:25,603 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 226 transitions. [2022-11-16 12:16:25,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:16:25,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:25,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:25,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:25,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:25,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:25,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:25,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1374843154, now seen corresponding path program 1 times [2022-11-16 12:16:25,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:25,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171895491] [2022-11-16 12:16:25,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:25,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:25,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:25,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:25,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 12:16:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:25,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:16:25,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:26,016 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:16:26,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:16:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:26,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:26,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:26,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171895491] [2022-11-16 12:16:26,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171895491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:26,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:26,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:16:26,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231645134] [2022-11-16 12:16:26,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:26,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:16:26,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:26,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:16:26,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:16:26,092 INFO L87 Difference]: Start difference. First operand 204 states and 226 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:26,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:26,793 INFO L93 Difference]: Finished difference Result 241 states and 262 transitions. [2022-11-16 12:16:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:16:26,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 12:16:26,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:26,795 INFO L225 Difference]: With dead ends: 241 [2022-11-16 12:16:26,795 INFO L226 Difference]: Without dead ends: 241 [2022-11-16 12:16:26,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:26,797 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 269 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:26,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 399 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:16:26,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-16 12:16:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 218. [2022-11-16 12:16:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 129 states have (on average 1.751937984496124) internal successors, (226), 206 states have internal predecessors, (226), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:16:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 253 transitions. [2022-11-16 12:16:26,815 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 253 transitions. Word has length 8 [2022-11-16 12:16:26,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:26,815 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 253 transitions. [2022-11-16 12:16:26,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:26,815 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 253 transitions. [2022-11-16 12:16:26,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:16:26,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:26,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:26,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:27,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:27,029 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:27,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:27,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1374843155, now seen corresponding path program 1 times [2022-11-16 12:16:27,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:27,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894324243] [2022-11-16 12:16:27,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:27,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:27,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:27,032 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:27,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 12:16:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:27,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:16:27,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:27,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:27,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:16:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:27,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:27,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:27,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894324243] [2022-11-16 12:16:27,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894324243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:27,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:27,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:16:27,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630004984] [2022-11-16 12:16:27,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:27,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:27,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:27,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:27,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:27,325 INFO L87 Difference]: Start difference. First operand 218 states and 253 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:28,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:28,119 INFO L93 Difference]: Finished difference Result 222 states and 246 transitions. [2022-11-16 12:16:28,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:16:28,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 12:16:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:28,121 INFO L225 Difference]: With dead ends: 222 [2022-11-16 12:16:28,121 INFO L226 Difference]: Without dead ends: 222 [2022-11-16 12:16:28,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:16:28,122 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 268 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:28,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 310 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:16:28,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-16 12:16:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 210. [2022-11-16 12:16:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 125 states have (on average 1.696) internal successors, (212), 198 states have internal predecessors, (212), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:16:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 239 transitions. [2022-11-16 12:16:28,141 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 239 transitions. Word has length 8 [2022-11-16 12:16:28,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:28,141 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 239 transitions. [2022-11-16 12:16:28,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 239 transitions. [2022-11-16 12:16:28,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:16:28,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:28,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:28,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:28,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:28,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:28,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:28,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1625645901, now seen corresponding path program 1 times [2022-11-16 12:16:28,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:28,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243467110] [2022-11-16 12:16:28,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:28,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:28,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:28,361 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:28,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 12:16:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:28,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:16:28,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:28,578 INFO L321 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2022-11-16 12:16:28,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 16 [2022-11-16 12:16:28,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:16:28,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:16:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:28,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:28,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:28,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243467110] [2022-11-16 12:16:28,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243467110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:28,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:28,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:28,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796812407] [2022-11-16 12:16:28,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:28,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:16:28,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:28,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:16:28,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:16:28,767 INFO L87 Difference]: Start difference. First operand 210 states and 239 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:29,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:29,565 INFO L93 Difference]: Finished difference Result 231 states and 260 transitions. [2022-11-16 12:16:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:16:29,566 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 12:16:29,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:29,568 INFO L225 Difference]: With dead ends: 231 [2022-11-16 12:16:29,568 INFO L226 Difference]: Without dead ends: 231 [2022-11-16 12:16:29,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:16:29,569 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 44 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:29,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1039 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:16:29,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-16 12:16:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 224. [2022-11-16 12:16:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 137 states have (on average 1.686131386861314) internal successors, (231), 211 states have internal predecessors, (231), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:16:29,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 260 transitions. [2022-11-16 12:16:29,580 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 260 transitions. Word has length 10 [2022-11-16 12:16:29,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:29,581 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 260 transitions. [2022-11-16 12:16:29,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:29,581 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 260 transitions. [2022-11-16 12:16:29,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:16:29,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:29,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:29,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:29,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:29,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:29,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:29,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1625645900, now seen corresponding path program 1 times [2022-11-16 12:16:29,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:29,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722771685] [2022-11-16 12:16:29,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:29,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:29,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:29,798 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:29,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 12:16:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:29,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:16:29,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:30,062 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:16:30,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:16:30,090 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:16:30,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:16:30,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:16:30,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:16:30,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:16:30,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:16:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:30,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:30,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:30,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722771685] [2022-11-16 12:16:30,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722771685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:30,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:30,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:30,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339381281] [2022-11-16 12:16:30,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:30,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:16:30,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:30,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:16:30,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:16:30,418 INFO L87 Difference]: Start difference. First operand 224 states and 260 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:31,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:31,716 INFO L93 Difference]: Finished difference Result 230 states and 259 transitions. [2022-11-16 12:16:31,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:16:31,717 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 12:16:31,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:31,718 INFO L225 Difference]: With dead ends: 230 [2022-11-16 12:16:31,719 INFO L226 Difference]: Without dead ends: 230 [2022-11-16 12:16:31,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:16:31,720 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 53 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:31,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 971 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:16:31,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-16 12:16:31,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2022-11-16 12:16:31,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 137 states have (on average 1.6788321167883211) internal successors, (230), 211 states have internal predecessors, (230), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:16:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 259 transitions. [2022-11-16 12:16:31,728 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 259 transitions. Word has length 10 [2022-11-16 12:16:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:31,728 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 259 transitions. [2022-11-16 12:16:31,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 259 transitions. [2022-11-16 12:16:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:16:31,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:31,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:31,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:31,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:31,942 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:31,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:31,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1144584946, now seen corresponding path program 1 times [2022-11-16 12:16:31,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:31,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795616561] [2022-11-16 12:16:31,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:31,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:31,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:31,945 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:31,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 12:16:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:32,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:16:32,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:32,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:16:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:32,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:32,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:32,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795616561] [2022-11-16 12:16:32,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795616561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:32,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:32,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:32,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725290913] [2022-11-16 12:16:32,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:32,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:32,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:32,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:32,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:32,121 INFO L87 Difference]: Start difference. First operand 224 states and 259 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:32,722 INFO L93 Difference]: Finished difference Result 245 states and 270 transitions. [2022-11-16 12:16:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:16:32,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 12:16:32,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:32,724 INFO L225 Difference]: With dead ends: 245 [2022-11-16 12:16:32,724 INFO L226 Difference]: Without dead ends: 245 [2022-11-16 12:16:32,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:16:32,725 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 105 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:32,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 703 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:16:32,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-16 12:16:32,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 223. [2022-11-16 12:16:32,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 137 states have (on average 1.6423357664233578) internal successors, (225), 210 states have internal predecessors, (225), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:16:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 254 transitions. [2022-11-16 12:16:32,731 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 254 transitions. Word has length 11 [2022-11-16 12:16:32,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:32,732 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 254 transitions. [2022-11-16 12:16:32,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:32,732 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 254 transitions. [2022-11-16 12:16:32,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:16:32,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:32,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:32,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:32,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:32,933 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:32,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:32,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1144584947, now seen corresponding path program 1 times [2022-11-16 12:16:32,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:32,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485071952] [2022-11-16 12:16:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:32,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:32,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:32,936 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:32,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 12:16:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:33,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:16:33,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:33,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:16:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:33,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:33,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:33,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485071952] [2022-11-16 12:16:33,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485071952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:33,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:33,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:33,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001250945] [2022-11-16 12:16:33,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:33,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:33,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:33,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:33,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:33,170 INFO L87 Difference]: Start difference. First operand 223 states and 254 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:34,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:34,005 INFO L93 Difference]: Finished difference Result 227 states and 250 transitions. [2022-11-16 12:16:34,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:16:34,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 12:16:34,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:34,007 INFO L225 Difference]: With dead ends: 227 [2022-11-16 12:16:34,008 INFO L226 Difference]: Without dead ends: 227 [2022-11-16 12:16:34,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:16:34,009 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 94 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:34,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 719 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 12:16:34,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-16 12:16:34,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2022-11-16 12:16:34,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 137 states have (on average 1.6131386861313868) internal successors, (221), 210 states have internal predecessors, (221), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:16:34,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 250 transitions. [2022-11-16 12:16:34,016 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 250 transitions. Word has length 11 [2022-11-16 12:16:34,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:34,017 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 250 transitions. [2022-11-16 12:16:34,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:34,017 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 250 transitions. [2022-11-16 12:16:34,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:16:34,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:34,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:34,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:34,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:34,230 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting list_addErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:34,230 INFO L85 PathProgramCache]: Analyzing trace with hash 434515829, now seen corresponding path program 1 times [2022-11-16 12:16:34,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:34,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385717251] [2022-11-16 12:16:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:34,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:34,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:34,239 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:34,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 12:16:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:34,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:16:34,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:34,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:34,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:34,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:34,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385717251] [2022-11-16 12:16:34,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385717251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:34,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:34,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:16:34,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125045494] [2022-11-16 12:16:34,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:34,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:16:34,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:34,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:16:34,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:16:34,384 INFO L87 Difference]: Start difference. First operand 223 states and 250 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:34,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:34,713 INFO L93 Difference]: Finished difference Result 222 states and 247 transitions. [2022-11-16 12:16:34,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:16:34,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:16:34,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:34,714 INFO L225 Difference]: With dead ends: 222 [2022-11-16 12:16:34,714 INFO L226 Difference]: Without dead ends: 222 [2022-11-16 12:16:34,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:16:34,715 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 22 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:34,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 499 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:16:34,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-16 12:16:34,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-11-16 12:16:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 137 states have (on average 1.5912408759124088) internal successors, (218), 209 states have internal predecessors, (218), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:16:34,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 247 transitions. [2022-11-16 12:16:34,736 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 247 transitions. Word has length 13 [2022-11-16 12:16:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:34,736 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 247 transitions. [2022-11-16 12:16:34,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:34,736 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 247 transitions. [2022-11-16 12:16:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:16:34,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:34,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:34,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:34,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:34,937 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting list_addErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:34,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:34,938 INFO L85 PathProgramCache]: Analyzing trace with hash 434515830, now seen corresponding path program 1 times [2022-11-16 12:16:34,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:34,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015729571] [2022-11-16 12:16:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:34,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:34,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:34,940 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:34,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 12:16:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:35,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:16:35,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:35,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:35,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:35,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015729571] [2022-11-16 12:16:35,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015729571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:35,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:35,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:35,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312543730] [2022-11-16 12:16:35,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:35,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:35,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:35,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:35,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:35,193 INFO L87 Difference]: Start difference. First operand 222 states and 247 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:35,854 INFO L93 Difference]: Finished difference Result 224 states and 245 transitions. [2022-11-16 12:16:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:16:35,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:16:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:35,857 INFO L225 Difference]: With dead ends: 224 [2022-11-16 12:16:35,857 INFO L226 Difference]: Without dead ends: 224 [2022-11-16 12:16:35,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:16:35,858 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 250 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:35,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 917 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:16:35,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-16 12:16:35,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2022-11-16 12:16:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 137 states have (on average 1.5766423357664234) internal successors, (216), 209 states have internal predecessors, (216), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:16:35,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 245 transitions. [2022-11-16 12:16:35,866 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 245 transitions. Word has length 13 [2022-11-16 12:16:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:35,866 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 245 transitions. [2022-11-16 12:16:35,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:35,866 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 245 transitions. [2022-11-16 12:16:35,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:16:35,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:35,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:35,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:36,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:36,079 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:36,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:36,079 INFO L85 PathProgramCache]: Analyzing trace with hash 853908818, now seen corresponding path program 1 times [2022-11-16 12:16:36,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:36,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798749767] [2022-11-16 12:16:36,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:36,080 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:36,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:36,081 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:36,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 12:16:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:36,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:16:36,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:36,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:36,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:36,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798749767] [2022-11-16 12:16:36,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798749767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:36,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:36,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:16:36,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45914630] [2022-11-16 12:16:36,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:36,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:16:36,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:36,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:16:36,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:16:36,304 INFO L87 Difference]: Start difference. First operand 222 states and 245 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:16:36,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:36,504 INFO L93 Difference]: Finished difference Result 221 states and 243 transitions. [2022-11-16 12:16:36,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:16:36,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-16 12:16:36,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:36,506 INFO L225 Difference]: With dead ends: 221 [2022-11-16 12:16:36,506 INFO L226 Difference]: Without dead ends: 221 [2022-11-16 12:16:36,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:36,507 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 297 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:36,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 453 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:16:36,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-16 12:16:36,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2022-11-16 12:16:36,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 137 states have (on average 1.5693430656934306) internal successors, (215), 208 states have internal predecessors, (215), 21 states have call successors, (21), 6 states have call predecessors, (21), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:16:36,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 243 transitions. [2022-11-16 12:16:36,517 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 243 transitions. Word has length 27 [2022-11-16 12:16:36,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:36,517 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 243 transitions. [2022-11-16 12:16:36,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:16:36,518 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 243 transitions. [2022-11-16 12:16:36,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:16:36,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:36,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:36,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:36,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:36,720 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting inspectErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:36,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:36,720 INFO L85 PathProgramCache]: Analyzing trace with hash 853896473, now seen corresponding path program 1 times [2022-11-16 12:16:36,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:36,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812207730] [2022-11-16 12:16:36,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:36,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:36,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:36,722 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:36,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 12:16:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:36,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:16:36,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:36,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:36,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:36,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812207730] [2022-11-16 12:16:36,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812207730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:36,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:36,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:16:36,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623809773] [2022-11-16 12:16:36,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:36,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:36,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:36,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:36,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:36,987 INFO L87 Difference]: Start difference. First operand 221 states and 243 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:16:37,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:37,834 INFO L93 Difference]: Finished difference Result 216 states and 238 transitions. [2022-11-16 12:16:37,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:16:37,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-16 12:16:37,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:37,836 INFO L225 Difference]: With dead ends: 216 [2022-11-16 12:16:37,836 INFO L226 Difference]: Without dead ends: 216 [2022-11-16 12:16:37,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:16:37,837 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 381 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:37,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 424 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 12:16:37,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-16 12:16:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-16 12:16:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 137 states have (on average 1.532846715328467) internal successors, (210), 203 states have internal predecessors, (210), 21 states have call successors, (21), 6 states have call predecessors, (21), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:16:37,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 238 transitions. [2022-11-16 12:16:37,845 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 238 transitions. Word has length 27 [2022-11-16 12:16:37,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:37,845 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 238 transitions. [2022-11-16 12:16:37,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:16:37,846 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 238 transitions. [2022-11-16 12:16:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:16:37,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:37,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:37,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:38,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:38,059 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting inspectErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:38,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:38,059 INFO L85 PathProgramCache]: Analyzing trace with hash 853896474, now seen corresponding path program 1 times [2022-11-16 12:16:38,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:38,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538710725] [2022-11-16 12:16:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:38,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:38,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:38,060 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:38,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 12:16:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:38,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:16:38,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:38,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:38,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:38,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538710725] [2022-11-16 12:16:38,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538710725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:38,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:38,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:16:38,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966532815] [2022-11-16 12:16:38,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:38,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:16:38,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:38,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:16:38,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:16:38,487 INFO L87 Difference]: Start difference. First operand 216 states and 238 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:16:39,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:39,851 INFO L93 Difference]: Finished difference Result 215 states and 237 transitions. [2022-11-16 12:16:39,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:16:39,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-16 12:16:39,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:39,854 INFO L225 Difference]: With dead ends: 215 [2022-11-16 12:16:39,854 INFO L226 Difference]: Without dead ends: 215 [2022-11-16 12:16:39,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:16:39,855 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 492 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:39,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 480 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 12:16:39,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-16 12:16:39,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2022-11-16 12:16:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 137 states have (on average 1.5255474452554745) internal successors, (209), 202 states have internal predecessors, (209), 21 states have call successors, (21), 6 states have call predecessors, (21), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:16:39,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 237 transitions. [2022-11-16 12:16:39,862 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 237 transitions. Word has length 27 [2022-11-16 12:16:39,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:39,863 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 237 transitions. [2022-11-16 12:16:39,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:16:39,863 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 237 transitions. [2022-11-16 12:16:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 12:16:39,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:39,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:39,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:40,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:40,078 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:40,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:40,079 INFO L85 PathProgramCache]: Analyzing trace with hash -661448180, now seen corresponding path program 1 times [2022-11-16 12:16:40,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:40,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490410924] [2022-11-16 12:16:40,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:40,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:40,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:40,081 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:40,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 12:16:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:40,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 12:16:40,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:40,335 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:16:40,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:16:40,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:16:40,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:16:40,625 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:16:40,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-16 12:16:40,746 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:40,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2022-11-16 12:16:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:40,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:40,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:40,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490410924] [2022-11-16 12:16:40,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490410924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:40,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:40,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:16:40,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835625057] [2022-11-16 12:16:40,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:40,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:16:40,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:40,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:16:40,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:16:40,777 INFO L87 Difference]: Start difference. First operand 215 states and 237 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:16:43,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:43,146 INFO L93 Difference]: Finished difference Result 360 states and 397 transitions. [2022-11-16 12:16:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:16:43,147 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-11-16 12:16:43,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:43,149 INFO L225 Difference]: With dead ends: 360 [2022-11-16 12:16:43,149 INFO L226 Difference]: Without dead ends: 360 [2022-11-16 12:16:43,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:16:43,150 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 1004 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:43,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 991 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 12:16:43,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-11-16 12:16:43,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 294. [2022-11-16 12:16:43,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 211 states have (on average 1.5545023696682465) internal successors, (328), 277 states have internal predecessors, (328), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 12:16:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 362 transitions. [2022-11-16 12:16:43,162 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 362 transitions. Word has length 30 [2022-11-16 12:16:43,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:43,162 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 362 transitions. [2022-11-16 12:16:43,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:16:43,163 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 362 transitions. [2022-11-16 12:16:43,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 12:16:43,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:43,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:43,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:43,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:43,377 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:43,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:43,378 INFO L85 PathProgramCache]: Analyzing trace with hash -662300209, now seen corresponding path program 1 times [2022-11-16 12:16:43,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:43,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144503747] [2022-11-16 12:16:43,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:43,379 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:43,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:43,380 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:43,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 12:16:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:43,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-16 12:16:43,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:43,765 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:16:43,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:16:44,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:16:44,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:16:44,451 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:16:44,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-11-16 12:16:44,590 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 12:16:44,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 12:16:44,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-16 12:16:44,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2022-11-16 12:16:45,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:45,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:45,279 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_493) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:16:46,002 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:46,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-16 12:16:46,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:46,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2022-11-16 12:16:46,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 12:16:50,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:16:50,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144503747] [2022-11-16 12:16:50,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144503747] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:50,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1547801130] [2022-11-16 12:16:50,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:50,747 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:16:50,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:16:50,749 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:16:50,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-16 12:16:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:51,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 12:16:51,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:51,496 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-16 12:16:51,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-16 12:16:52,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:16:52,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:16:52,871 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:16:52,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-16 12:16:53,127 INFO L321 Elim1Store]: treesize reduction 78, result has 35.0 percent of original size [2022-11-16 12:16:53,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 67 [2022-11-16 12:16:53,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-16 12:16:53,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2022-11-16 12:16:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:53,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:53,734 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_572 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_572) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (_ bv1 1)))) is different from false [2022-11-16 12:16:54,535 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:54,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-16 12:16:54,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:54,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2022-11-16 12:16:54,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 12:16:56,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1547801130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:56,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:16:56,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 29 [2022-11-16 12:16:56,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021049448] [2022-11-16 12:16:56,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:16:56,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 12:16:56,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:16:56,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 12:16:56,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1454, Unknown=57, NotChecked=162, Total=1892 [2022-11-16 12:16:56,943 INFO L87 Difference]: Start difference. First operand 294 states and 362 transitions. Second operand has 31 states, 29 states have (on average 1.793103448275862) internal successors, (52), 26 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:16:58,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:58,568 INFO L93 Difference]: Finished difference Result 334 states and 398 transitions. [2022-11-16 12:16:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:16:58,570 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.793103448275862) internal successors, (52), 26 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-16 12:16:58,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:58,571 INFO L225 Difference]: With dead ends: 334 [2022-11-16 12:16:58,572 INFO L226 Difference]: Without dead ends: 334 [2022-11-16 12:16:58,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=321, Invalid=1886, Unknown=57, NotChecked=186, Total=2450 [2022-11-16 12:16:58,573 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 177 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 671 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:58,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1989 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 484 Invalid, 0 Unknown, 671 Unchecked, 1.0s Time] [2022-11-16 12:16:58,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-16 12:16:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 294. [2022-11-16 12:16:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 211 states have (on average 1.5497630331753554) internal successors, (327), 277 states have internal predecessors, (327), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 12:16:58,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 361 transitions. [2022-11-16 12:16:58,592 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 361 transitions. Word has length 29 [2022-11-16 12:16:58,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:58,592 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 361 transitions. [2022-11-16 12:16:58,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.793103448275862) internal successors, (52), 26 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:16:58,593 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 361 transitions. [2022-11-16 12:16:58,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 12:16:58,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:58,595 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:58,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:58,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:59,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:59,008 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:16:59,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:59,008 INFO L85 PathProgramCache]: Analyzing trace with hash -662300208, now seen corresponding path program 1 times [2022-11-16 12:16:59,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:16:59,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67873786] [2022-11-16 12:16:59,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:59,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:16:59,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:16:59,012 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:16:59,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-16 12:16:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:59,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-16 12:16:59,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:59,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:16:59,391 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:16:59,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:16:59,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:16:59,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:17:00,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:17:00,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:17:00,154 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:17:00,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-16 12:17:00,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:17:00,286 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:17:00,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:17:00,317 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-16 12:17:00,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:17:00,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-16 12:17:00,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:17:00,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 12:17:00,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:17:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:00,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:01,198 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_655 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_656) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_655) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))) (forall ((v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_656) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))) is different from false [2022-11-16 12:17:07,990 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:17:07,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 143 [2022-11-16 12:17:08,031 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:17:08,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 107 [2022-11-16 12:17:08,073 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:17:08,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 97 [2022-11-16 12:17:08,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 178 [2022-11-16 12:17:08,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 442 treesize of output 422 [2022-11-16 12:17:08,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 415 treesize of output 407 [2022-11-16 12:17:08,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 407 treesize of output 391 [2022-11-16 12:17:08,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 391 treesize of output 375 [2022-11-16 12:17:08,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 375 treesize of output 367 [2022-11-16 12:17:08,271 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:17:08,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 367 treesize of output 358 [2022-11-16 12:17:08,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 408 treesize of output 396 [2022-11-16 12:17:08,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 389 treesize of output 381 [2022-11-16 12:17:08,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 381 treesize of output 377 [2022-11-16 12:17:12,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:17:12,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67873786] [2022-11-16 12:17:12,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67873786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:17:12,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [556022897] [2022-11-16 12:17:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:12,570 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:17:12,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:17:12,575 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:17:12,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-16 12:17:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:13,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-16 12:17:13,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:13,599 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:17:13,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:17:13,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:17:16,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:17:16,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:17:16,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:17:16,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:17:17,107 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:17:17,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 46 [2022-11-16 12:17:17,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:17:17,701 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-16 12:17:17,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-16 12:17:17,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:17:18,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-11-16 12:17:18,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:17:18,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 12:17:18,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:17:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:18,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:19,138 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_745) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_744 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_745) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_744) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) is different from false [2022-11-16 12:17:19,275 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_25| (_ BitVec 32))) (or (forall ((v_ArrVal_743 (_ BitVec 32)) (v_ArrVal_744 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_745) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select (store |c_#length| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_743) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_744) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))) (not (= (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25|) (_ bv0 1))))) (forall ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_25| (_ BitVec 32))) (or (forall ((v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_745) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (not (= (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25|) (_ bv0 1)))))) is different from false [2022-11-16 12:17:19,833 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_741 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_742 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_25| (_ BitVec 32))) (or (forall ((v_ArrVal_743 (_ BitVec 32)) (v_ArrVal_744 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_741) |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_745) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (select (store |c_#length| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_743) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_742) |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_744) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))) (not (= (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25|) (_ bv0 1))))) (forall ((v_ArrVal_741 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_25| (_ BitVec 32))) (or (forall ((v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_741) |v_ULTIMATE.start_gl_insert_~node~1#1.base_25| v_ArrVal_745) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (not (= (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_25|) (_ bv0 1)))))) is different from false [2022-11-16 12:17:20,965 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:17:20,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 38 [2022-11-16 12:17:20,971 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:20,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2022-11-16 12:17:21,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:17:21,062 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:17:21,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2022-11-16 12:17:21,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:21,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 76 [2022-11-16 12:17:21,107 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:17:21,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 62 [2022-11-16 12:17:21,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:17:21,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 84 [2022-11-16 12:17:21,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2022-11-16 12:17:21,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70 [2022-11-16 12:17:26,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [556022897] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:17:26,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:17:26,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-16 12:17:26,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509014437] [2022-11-16 12:17:26,682 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:17:26,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 12:17:26,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:17:26,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 12:17:26,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1306, Unknown=14, NotChecked=308, Total=1806 [2022-11-16 12:17:26,685 INFO L87 Difference]: Start difference. First operand 294 states and 361 transitions. Second operand has 30 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:17:31,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:31,185 INFO L93 Difference]: Finished difference Result 310 states and 376 transitions. [2022-11-16 12:17:31,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:17:31,186 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-16 12:17:31,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:31,188 INFO L225 Difference]: With dead ends: 310 [2022-11-16 12:17:31,188 INFO L226 Difference]: Without dead ends: 310 [2022-11-16 12:17:31,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=254, Invalid=1640, Unknown=14, NotChecked=348, Total=2256 [2022-11-16 12:17:31,189 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 228 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 519 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:31,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1268 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 675 Invalid, 0 Unknown, 519 Unchecked, 3.1s Time] [2022-11-16 12:17:31,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-11-16 12:17:31,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 280. [2022-11-16 12:17:31,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 199 states have (on average 1.5778894472361809) internal successors, (314), 264 states have internal predecessors, (314), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:17:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 346 transitions. [2022-11-16 12:17:31,200 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 346 transitions. Word has length 29 [2022-11-16 12:17:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:31,200 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 346 transitions. [2022-11-16 12:17:31,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:17:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 346 transitions. [2022-11-16 12:17:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 12:17:31,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:31,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:31,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:31,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:31,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:17:31,615 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting inspectErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:17:31,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash -661459978, now seen corresponding path program 1 times [2022-11-16 12:17:31,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:17:31,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449774831] [2022-11-16 12:17:31,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:31,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:17:31,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:17:31,617 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:17:31,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 12:17:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:31,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:17:31,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:31,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:17:31,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:17:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:32,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:17:32,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:17:32,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449774831] [2022-11-16 12:17:32,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449774831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:32,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:32,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:17:32,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889378252] [2022-11-16 12:17:32,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:32,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:17:32,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:17:32,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:17:32,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:17:32,718 INFO L87 Difference]: Start difference. First operand 280 states and 346 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:17:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:34,334 INFO L93 Difference]: Finished difference Result 278 states and 342 transitions. [2022-11-16 12:17:34,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:17:34,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-11-16 12:17:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:34,335 INFO L225 Difference]: With dead ends: 278 [2022-11-16 12:17:34,335 INFO L226 Difference]: Without dead ends: 278 [2022-11-16 12:17:34,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:17:34,336 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 452 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:34,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 219 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 12:17:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-16 12:17:34,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-11-16 12:17:34,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 199 states have (on average 1.5577889447236182) internal successors, (310), 262 states have internal predecessors, (310), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:17:34,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 342 transitions. [2022-11-16 12:17:34,344 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 342 transitions. Word has length 30 [2022-11-16 12:17:34,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:34,345 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 342 transitions. [2022-11-16 12:17:34,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:17:34,345 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 342 transitions. [2022-11-16 12:17:34,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 12:17:34,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:34,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:34,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:34,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:17:34,559 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:17:34,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:34,559 INFO L85 PathProgramCache]: Analyzing trace with hash -244243135, now seen corresponding path program 1 times [2022-11-16 12:17:34,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:17:34,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225789854] [2022-11-16 12:17:34,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:34,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:17:34,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:17:34,563 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:17:34,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 12:17:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:34,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-16 12:17:34,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:34,975 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:17:34,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:17:35,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:17:35,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:17:35,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:17:35,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:17:36,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:17:36,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-11-16 12:17:36,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:17:36,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2022-11-16 12:17:36,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:17:36,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-11-16 12:17:36,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-16 12:17:37,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:17:37,263 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:17:37,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-16 12:17:37,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-16 12:17:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:38,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:17:38,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:17:38,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225789854] [2022-11-16 12:17:38,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225789854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:38,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:38,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 12:17:38,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86053305] [2022-11-16 12:17:38,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:38,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:17:38,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:17:38,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:17:38,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=225, Unknown=13, NotChecked=0, Total=272 [2022-11-16 12:17:38,099 INFO L87 Difference]: Start difference. First operand 278 states and 342 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:17:47,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:47,515 INFO L93 Difference]: Finished difference Result 452 states and 534 transitions. [2022-11-16 12:17:47,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:17:47,515 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-11-16 12:17:47,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:47,518 INFO L225 Difference]: With dead ends: 452 [2022-11-16 12:17:47,518 INFO L226 Difference]: Without dead ends: 452 [2022-11-16 12:17:47,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=94, Invalid=533, Unknown=23, NotChecked=0, Total=650 [2022-11-16 12:17:47,519 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 403 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 385 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:47,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 1245 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1721 Invalid, 0 Unknown, 385 Unchecked, 7.7s Time] [2022-11-16 12:17:47,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-16 12:17:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 379. [2022-11-16 12:17:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5273972602739727) internal successors, (446), 356 states have internal predecessors, (446), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 12:17:47,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 488 transitions. [2022-11-16 12:17:47,541 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 488 transitions. Word has length 33 [2022-11-16 12:17:47,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:47,542 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 488 transitions. [2022-11-16 12:17:47,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:17:47,542 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 488 transitions. [2022-11-16 12:17:47,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 12:17:47,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:47,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:47,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:47,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:17:47,755 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:17:47,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:47,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1920035533, now seen corresponding path program 1 times [2022-11-16 12:17:47,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:17:47,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058842947] [2022-11-16 12:17:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:47,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:17:47,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:17:47,756 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:17:47,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-16 12:17:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:47,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 12:17:47,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:48,164 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:17:48,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:17:48,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:17:48,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:17:48,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:17:48,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:17:49,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:17:49,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-11-16 12:17:50,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:17:50,056 INFO L321 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-11-16 12:17:50,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 38 [2022-11-16 12:17:50,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:17:50,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-11-16 12:17:50,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-16 12:17:50,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:17:50,410 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:17:50,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2022-11-16 12:17:51,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:17:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:51,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:17:51,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:17:51,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058842947] [2022-11-16 12:17:51,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058842947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:51,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:51,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-16 12:17:51,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921251717] [2022-11-16 12:17:51,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:51,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:17:51,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:17:51,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:17:51,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=259, Unknown=11, NotChecked=0, Total=306 [2022-11-16 12:17:51,565 INFO L87 Difference]: Start difference. First operand 379 states and 488 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:18:01,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:01,405 INFO L93 Difference]: Finished difference Result 451 states and 532 transitions. [2022-11-16 12:18:01,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:18:01,406 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-11-16 12:18:01,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:01,408 INFO L225 Difference]: With dead ends: 451 [2022-11-16 12:18:01,408 INFO L226 Difference]: Without dead ends: 451 [2022-11-16 12:18:01,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=104, Invalid=630, Unknown=22, NotChecked=0, Total=756 [2022-11-16 12:18:01,409 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 417 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 2404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 544 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:01,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1414 Invalid, 2404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1823 Invalid, 0 Unknown, 544 Unchecked, 7.8s Time] [2022-11-16 12:18:01,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-16 12:18:01,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 379. [2022-11-16 12:18:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.523972602739726) internal successors, (445), 356 states have internal predecessors, (445), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 12:18:01,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 487 transitions. [2022-11-16 12:18:01,422 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 487 transitions. Word has length 37 [2022-11-16 12:18:01,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:01,423 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 487 transitions. [2022-11-16 12:18:01,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:18:01,423 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 487 transitions. [2022-11-16 12:18:01,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 12:18:01,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:01,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:01,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:18:01,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:18:01,638 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting inspectErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:18:01,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1920024890, now seen corresponding path program 1 times [2022-11-16 12:18:01,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:18:01,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840120983] [2022-11-16 12:18:01,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:01,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:18:01,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:18:01,640 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:18:01,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-16 12:18:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:01,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 12:18:01,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:02,079 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:18:02,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:18:02,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:18:02,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:18:02,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:18:02,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:18:04,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:04,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-11-16 12:18:04,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:04,416 INFO L321 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-11-16 12:18:04,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 38 [2022-11-16 12:18:04,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:04,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-11-16 12:18:04,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-16 12:18:04,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:18:04,792 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:18:04,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:18:05,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-16 12:18:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:06,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:18:06,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:18:06,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840120983] [2022-11-16 12:18:06,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840120983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:06,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:06,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 12:18:06,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290887114] [2022-11-16 12:18:06,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:06,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:18:06,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:18:06,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:18:06,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=256, Unknown=13, NotChecked=0, Total=306 [2022-11-16 12:18:06,088 INFO L87 Difference]: Start difference. First operand 379 states and 487 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:18:11,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:11,140 INFO L93 Difference]: Finished difference Result 448 states and 529 transitions. [2022-11-16 12:18:11,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:18:11,140 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-11-16 12:18:11,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:11,142 INFO L225 Difference]: With dead ends: 448 [2022-11-16 12:18:11,142 INFO L226 Difference]: Without dead ends: 448 [2022-11-16 12:18:11,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=71, Invalid=462, Unknown=19, NotChecked=0, Total=552 [2022-11-16 12:18:11,143 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 305 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1067 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:11,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1475 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 892 Invalid, 0 Unknown, 1067 Unchecked, 3.8s Time] [2022-11-16 12:18:11,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-16 12:18:11,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 379. [2022-11-16 12:18:11,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5205479452054795) internal successors, (444), 356 states have internal predecessors, (444), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 12:18:11,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 486 transitions. [2022-11-16 12:18:11,156 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 486 transitions. Word has length 37 [2022-11-16 12:18:11,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:11,156 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 486 transitions. [2022-11-16 12:18:11,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:18:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 486 transitions. [2022-11-16 12:18:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 12:18:11,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:11,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:11,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:18:11,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:18:11,370 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting inspectErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:18:11,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:11,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1920024891, now seen corresponding path program 1 times [2022-11-16 12:18:11,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:18:11,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327374577] [2022-11-16 12:18:11,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:11,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:18:11,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:18:11,372 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:18:11,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-16 12:18:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:11,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-16 12:18:11,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:11,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:18:11,929 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:18:11,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:18:12,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:18:12,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:18:12,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:18:12,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:18:15,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:15,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2022-11-16 12:18:15,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:15,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2022-11-16 12:18:15,339 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:18:15,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 47 [2022-11-16 12:18:15,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:15,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2022-11-16 12:18:15,419 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 12:18:15,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 33 [2022-11-16 12:18:15,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:15,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-16 12:18:15,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:18:15,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:18:15,904 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:18:15,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:18:15,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:18:17,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:18:17,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 12:18:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:17,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:18:17,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:18:17,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327374577] [2022-11-16 12:18:17,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327374577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:17,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:17,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 12:18:17,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178208345] [2022-11-16 12:18:17,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:17,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:18:17,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:18:17,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:18:17,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=255, Unknown=12, NotChecked=0, Total=306 [2022-11-16 12:18:17,443 INFO L87 Difference]: Start difference. First operand 379 states and 486 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:18:22,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:22,855 INFO L93 Difference]: Finished difference Result 447 states and 528 transitions. [2022-11-16 12:18:22,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:18:22,856 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-11-16 12:18:22,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:22,858 INFO L225 Difference]: With dead ends: 447 [2022-11-16 12:18:22,858 INFO L226 Difference]: Without dead ends: 447 [2022-11-16 12:18:22,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=77, Invalid=508, Unknown=15, NotChecked=0, Total=600 [2022-11-16 12:18:22,859 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 348 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1153 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:22,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1320 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 841 Invalid, 0 Unknown, 1153 Unchecked, 4.0s Time] [2022-11-16 12:18:22,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-11-16 12:18:22,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 379. [2022-11-16 12:18:22,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5102739726027397) internal successors, (441), 356 states have internal predecessors, (441), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 12:18:22,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 483 transitions. [2022-11-16 12:18:22,871 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 483 transitions. Word has length 37 [2022-11-16 12:18:22,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:22,871 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 483 transitions. [2022-11-16 12:18:22,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:18:22,872 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 483 transitions. [2022-11-16 12:18:22,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 12:18:22,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:22,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:22,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:18:23,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:18:23,085 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:18:23,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:23,086 INFO L85 PathProgramCache]: Analyzing trace with hash -912874368, now seen corresponding path program 1 times [2022-11-16 12:18:23,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:18:23,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239157458] [2022-11-16 12:18:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:23,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:18:23,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:18:23,088 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:18:23,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-16 12:18:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:23,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-16 12:18:23,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:23,616 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:18:23,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:18:23,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:18:23,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:18:23,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:18:23,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:18:27,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:27,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 157 [2022-11-16 12:18:27,870 INFO L321 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2022-11-16 12:18:27,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 52 [2022-11-16 12:18:27,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:27,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2022-11-16 12:18:27,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:27,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-16 12:18:28,284 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:18:28,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-16 12:18:28,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:18:28,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:28,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:28,334 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:18:28,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-11-16 12:18:28,608 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:18:28,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 48 [2022-11-16 12:18:28,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:28,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:28,623 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 12:18:28,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 42 [2022-11-16 12:18:29,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:18:30,385 INFO L321 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2022-11-16 12:18:30,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 20 [2022-11-16 12:18:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:30,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:18:30,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:18:30,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239157458] [2022-11-16 12:18:30,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239157458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:30,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:30,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 12:18:30,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049286148] [2022-11-16 12:18:30,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:30,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:18:30,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:18:30,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:18:30,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=295, Unknown=6, NotChecked=0, Total=342 [2022-11-16 12:18:30,661 INFO L87 Difference]: Start difference. First operand 379 states and 483 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:18:42,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:42,203 INFO L93 Difference]: Finished difference Result 446 states and 526 transitions. [2022-11-16 12:18:42,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:18:42,204 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-11-16 12:18:42,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:42,205 INFO L225 Difference]: With dead ends: 446 [2022-11-16 12:18:42,205 INFO L226 Difference]: Without dead ends: 446 [2022-11-16 12:18:42,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=119, Invalid=735, Unknown=16, NotChecked=0, Total=870 [2022-11-16 12:18:42,206 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 441 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 562 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:42,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1439 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1923 Invalid, 0 Unknown, 562 Unchecked, 8.9s Time] [2022-11-16 12:18:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-16 12:18:42,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 379. [2022-11-16 12:18:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5068493150684932) internal successors, (440), 356 states have internal predecessors, (440), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 12:18:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 482 transitions. [2022-11-16 12:18:42,233 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 482 transitions. Word has length 40 [2022-11-16 12:18:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:42,234 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 482 transitions. [2022-11-16 12:18:42,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:18:42,234 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 482 transitions. [2022-11-16 12:18:42,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 12:18:42,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:42,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:42,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-16 12:18:42,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:18:42,450 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:18:42,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:42,450 INFO L85 PathProgramCache]: Analyzing trace with hash -8084452, now seen corresponding path program 1 times [2022-11-16 12:18:42,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:18:42,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189304010] [2022-11-16 12:18:42,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:42,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:18:42,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:18:42,452 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:18:42,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-16 12:18:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:42,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-16 12:18:42,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:42,921 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:18:42,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:18:43,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:18:43,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:18:43,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:18:43,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:18:46,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:46,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:46,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:46,498 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-16 12:18:46,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 210 treesize of output 94 [2022-11-16 12:18:46,556 INFO L321 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2022-11-16 12:18:46,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 63 [2022-11-16 12:18:46,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:46,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 34 [2022-11-16 12:18:46,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:46,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2022-11-16 12:18:46,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:46,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:46,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:46,903 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:18:46,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 60 [2022-11-16 12:18:46,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:18:47,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:47,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:47,145 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:18:47,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 52 [2022-11-16 12:18:47,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:18:48,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:18:49,257 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-11-16 12:18:49,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 23 [2022-11-16 12:18:49,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:49,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:18:49,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:18:49,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189304010] [2022-11-16 12:18:49,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189304010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:49,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:49,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 12:18:49,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239233790] [2022-11-16 12:18:49,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:49,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:18:49,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:18:49,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:18:49,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=298, Unknown=4, NotChecked=0, Total=342 [2022-11-16 12:18:49,523 INFO L87 Difference]: Start difference. First operand 379 states and 482 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:19:02,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:02,478 INFO L93 Difference]: Finished difference Result 445 states and 524 transitions. [2022-11-16 12:19:02,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:19:02,479 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-11-16 12:19:02,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:02,482 INFO L225 Difference]: With dead ends: 445 [2022-11-16 12:19:02,482 INFO L226 Difference]: Without dead ends: 445 [2022-11-16 12:19:02,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=118, Invalid=746, Unknown=6, NotChecked=0, Total=870 [2022-11-16 12:19:02,483 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 385 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 2551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 584 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:02,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1602 Invalid, 2551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1934 Invalid, 0 Unknown, 584 Unchecked, 9.9s Time] [2022-11-16 12:19:02,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-11-16 12:19:02,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 379. [2022-11-16 12:19:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5034246575342465) internal successors, (439), 356 states have internal predecessors, (439), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 12:19:02,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 481 transitions. [2022-11-16 12:19:02,494 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 481 transitions. Word has length 43 [2022-11-16 12:19:02,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:02,495 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 481 transitions. [2022-11-16 12:19:02,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:19:02,495 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 481 transitions. [2022-11-16 12:19:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 12:19:02,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:02,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:02,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:02,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:19:02,703 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:19:02,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:02,703 INFO L85 PathProgramCache]: Analyzing trace with hash -610222928, now seen corresponding path program 1 times [2022-11-16 12:19:02,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:19:02,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075487825] [2022-11-16 12:19:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:02,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:19:02,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:19:02,704 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:19:02,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-16 12:19:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:02,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:19:02,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:02,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:19:03,238 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:19:03,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:19:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:03,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:19:03,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:19:03,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075487825] [2022-11-16 12:19:03,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075487825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:03,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:03,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:19:03,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714429776] [2022-11-16 12:19:03,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:03,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:19:03,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:19:03,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:19:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:19:03,308 INFO L87 Difference]: Start difference. First operand 379 states and 481 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:19:04,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:04,279 INFO L93 Difference]: Finished difference Result 378 states and 477 transitions. [2022-11-16 12:19:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:19:04,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-16 12:19:04,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:04,280 INFO L225 Difference]: With dead ends: 378 [2022-11-16 12:19:04,280 INFO L226 Difference]: Without dead ends: 378 [2022-11-16 12:19:04,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:19:04,281 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 288 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:04,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 288 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:19:04,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-16 12:19:04,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2022-11-16 12:19:04,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 292 states have (on average 1.4931506849315068) internal successors, (436), 355 states have internal predecessors, (436), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 12:19:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 477 transitions. [2022-11-16 12:19:04,291 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 477 transitions. Word has length 46 [2022-11-16 12:19:04,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:04,291 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 477 transitions. [2022-11-16 12:19:04,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:19:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 477 transitions. [2022-11-16 12:19:04,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 12:19:04,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:04,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:04,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:04,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:19:04,505 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting inspectErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:19:04,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:04,505 INFO L85 PathProgramCache]: Analyzing trace with hash -610231965, now seen corresponding path program 1 times [2022-11-16 12:19:04,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:19:04,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102101527] [2022-11-16 12:19:04,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:04,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:19:04,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:19:04,508 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:19:04,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-16 12:19:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:04,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:19:04,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:04,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:04,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:19:04,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:19:04,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102101527] [2022-11-16 12:19:04,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102101527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:04,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:04,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:19:04,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642732485] [2022-11-16 12:19:04,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:04,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:19:04,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:19:04,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:19:04,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:19:04,792 INFO L87 Difference]: Start difference. First operand 378 states and 477 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:19:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:05,616 INFO L93 Difference]: Finished difference Result 372 states and 459 transitions. [2022-11-16 12:19:05,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:19:05,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-16 12:19:05,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:05,619 INFO L225 Difference]: With dead ends: 372 [2022-11-16 12:19:05,619 INFO L226 Difference]: Without dead ends: 372 [2022-11-16 12:19:05,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:19:05,620 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 121 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:05,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 295 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 12:19:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-11-16 12:19:05,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2022-11-16 12:19:05,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 292 states have (on average 1.4315068493150684) internal successors, (418), 349 states have internal predecessors, (418), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 12:19:05,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 459 transitions. [2022-11-16 12:19:05,630 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 459 transitions. Word has length 46 [2022-11-16 12:19:05,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:05,630 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 459 transitions. [2022-11-16 12:19:05,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:19:05,631 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 459 transitions. [2022-11-16 12:19:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 12:19:05,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:05,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:05,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:05,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:19:05,844 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting inspectErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:19:05,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:05,845 INFO L85 PathProgramCache]: Analyzing trace with hash -610231964, now seen corresponding path program 1 times [2022-11-16 12:19:05,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:19:05,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080603054] [2022-11-16 12:19:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:05,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:19:05,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:19:05,846 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:19:05,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-16 12:19:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:06,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-16 12:19:06,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:06,314 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:19:06,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:19:06,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:19:06,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:19:06,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:19:06,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:19:06,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:19:09,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:09,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2022-11-16 12:19:09,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:09,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2022-11-16 12:19:09,794 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:19:09,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 47 [2022-11-16 12:19:09,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:09,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2022-11-16 12:19:09,859 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 12:19:09,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 33 [2022-11-16 12:19:09,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:09,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-11-16 12:19:10,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:19:10,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:19:10,261 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:19:10,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:19:10,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:19:11,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:19:11,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 12:19:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:12,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:19:12,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:19:12,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080603054] [2022-11-16 12:19:12,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080603054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:12,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:12,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-16 12:19:12,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172667488] [2022-11-16 12:19:12,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:12,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:19:12,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:19:12,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:19:12,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=288, Unknown=13, NotChecked=0, Total=342 [2022-11-16 12:19:12,225 INFO L87 Difference]: Start difference. First operand 372 states and 459 transitions. Second operand has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:19:18,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:18,326 INFO L93 Difference]: Finished difference Result 424 states and 493 transitions. [2022-11-16 12:19:18,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:19:18,327 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-16 12:19:18,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:18,328 INFO L225 Difference]: With dead ends: 424 [2022-11-16 12:19:18,328 INFO L226 Difference]: Without dead ends: 424 [2022-11-16 12:19:18,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=94, Invalid=645, Unknown=17, NotChecked=0, Total=756 [2022-11-16 12:19:18,329 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 346 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 900 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:18,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1403 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 955 Invalid, 0 Unknown, 900 Unchecked, 4.1s Time] [2022-11-16 12:19:18,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-16 12:19:18,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 372. [2022-11-16 12:19:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 292 states have (on average 1.4075342465753424) internal successors, (411), 349 states have internal predecessors, (411), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 12:19:18,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 452 transitions. [2022-11-16 12:19:18,338 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 452 transitions. Word has length 46 [2022-11-16 12:19:18,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:18,339 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 452 transitions. [2022-11-16 12:19:18,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:19:18,339 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 452 transitions. [2022-11-16 12:19:18,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-16 12:19:18,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:18,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:18,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-16 12:19:18,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:19:18,553 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:19:18,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:18,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1176224425, now seen corresponding path program 1 times [2022-11-16 12:19:18,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:19:18,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107648486] [2022-11-16 12:19:18,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:18,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:19:18,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:19:18,555 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:19:18,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-16 12:19:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:18,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-16 12:19:18,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:19,013 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:19:19,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:19:19,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:19:19,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:19:19,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:19:19,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:19:21,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:21,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 93 [2022-11-16 12:19:21,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:22,008 INFO L321 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-11-16 12:19:22,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 104 treesize of output 95 [2022-11-16 12:19:22,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:22,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 76 [2022-11-16 12:19:22,072 INFO L321 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2022-11-16 12:19:22,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 51 [2022-11-16 12:19:22,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:22,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2022-11-16 12:19:22,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:22,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2022-11-16 12:19:22,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:19:22,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:19:22,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:22,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 35 [2022-11-16 12:19:22,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 26 [2022-11-16 12:19:25,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:19:25,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:25,276 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:19:25,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 27 [2022-11-16 12:19:25,306 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:19:25,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 18 [2022-11-16 12:19:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:25,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:19:25,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:19:25,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107648486] [2022-11-16 12:19:25,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107648486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:25,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:25,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:19:25,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273787868] [2022-11-16 12:19:25,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:25,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:19:25,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:19:25,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:19:25,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=325, Unknown=13, NotChecked=0, Total=380 [2022-11-16 12:19:25,569 INFO L87 Difference]: Start difference. First operand 372 states and 452 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:19:39,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:39,193 INFO L93 Difference]: Finished difference Result 422 states and 489 transitions. [2022-11-16 12:19:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:19:39,194 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-11-16 12:19:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:39,195 INFO L225 Difference]: With dead ends: 422 [2022-11-16 12:19:39,196 INFO L226 Difference]: Without dead ends: 422 [2022-11-16 12:19:39,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=146, Invalid=949, Unknown=27, NotChecked=0, Total=1122 [2022-11-16 12:19:39,196 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 417 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 748 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:39,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1792 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1751 Invalid, 0 Unknown, 748 Unchecked, 9.4s Time] [2022-11-16 12:19:39,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-16 12:19:39,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 372. [2022-11-16 12:19:39,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 292 states have (on average 1.4006849315068493) internal successors, (409), 349 states have internal predecessors, (409), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 12:19:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 450 transitions. [2022-11-16 12:19:39,207 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 450 transitions. Word has length 49 [2022-11-16 12:19:39,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:39,207 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 450 transitions. [2022-11-16 12:19:39,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:19:39,208 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 450 transitions. [2022-11-16 12:19:39,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 12:19:39,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:39,209 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:39,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:39,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:19:39,422 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:19:39,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:39,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1567315803, now seen corresponding path program 1 times [2022-11-16 12:19:39,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:19:39,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680099268] [2022-11-16 12:19:39,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:39,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:19:39,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:19:39,425 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:19:39,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-16 12:19:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:39,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-16 12:19:39,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:40,080 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:19:40,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:19:40,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:19:40,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:19:40,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:19:40,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:19:41,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:41,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-11-16 12:19:41,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:41,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2022-11-16 12:19:41,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:41,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-11-16 12:19:41,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-16 12:19:42,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-16 12:19:42,215 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:19:42,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2022-11-16 12:19:42,526 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:19:42,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:19:42,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2022-11-16 12:19:42,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:42,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 8 [2022-11-16 12:19:44,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:44,805 INFO L321 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2022-11-16 12:19:44,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 126 [2022-11-16 12:19:44,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:44,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 91 [2022-11-16 12:19:44,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-16 12:19:45,045 INFO L321 Elim1Store]: treesize reduction 25, result has 35.9 percent of original size [2022-11-16 12:19:45,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 70 [2022-11-16 12:19:45,072 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 12:19:45,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-16 12:19:45,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-16 12:19:46,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-16 12:19:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:46,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:19:48,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:19:48,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680099268] [2022-11-16 12:19:48,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680099268] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:48,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2013475385] [2022-11-16 12:19:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:48,561 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:19:48,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:19:48,563 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:19:48,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-16 12:19:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:50,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-16 12:19:50,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:50,235 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:19:50,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:19:50,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:19:50,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:19:50,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:19:50,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:19:51,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:51,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2022-11-16 12:19:51,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:51,611 INFO L321 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-11-16 12:19:51,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 38 [2022-11-16 12:19:51,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:51,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2022-11-16 12:19:51,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-16 12:19:51,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-16 12:19:51,775 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:19:51,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2022-11-16 12:19:51,982 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:19:51,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:19:52,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2022-11-16 12:19:52,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:52,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 8 [2022-11-16 12:19:53,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:53,527 INFO L321 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2022-11-16 12:19:53,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 126 [2022-11-16 12:19:53,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:53,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 91 [2022-11-16 12:19:53,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-16 12:19:53,902 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse8 (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|))) (let ((.cse0 (select .cse8 (bvadd (_ bv4 32) |c_~#gl_list~0.offset|)))) (and (let ((.cse2 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base|)) (.cse3 (select .cse8 |c_~#gl_list~0.offset|))) (or (and (= .cse0 |c_ULTIMATE.start_gl_insert_~node~1#1.base|) (exists ((v_DerPreprocessor_1 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_2 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_3 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store (store (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_1) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_DerPreprocessor_2) |c_~#gl_list~0.base| v_DerPreprocessor_3) .cse0 v_DerPreprocessor_1) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_DerPreprocessor_2) |c_~#gl_list~0.base| v_DerPreprocessor_3))) (and (= (select .cse1 |c_ULTIMATE.start_gl_insert_~node~1#1.base|) .cse2) (= (select .cse1 .cse0) v_DerPreprocessor_1) (= .cse3 (select v_DerPreprocessor_3 |c_~#gl_list~0.offset|)))))) (exists ((v_DerPreprocessor_1 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_2 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select |c_#memory_$Pointer$.base| .cse0))) (let ((.cse6 (let ((.cse7 (store .cse5 |c_~#gl_list~0.offset| .cse3))) (store (store (store (store (store (store |c_#memory_$Pointer$.base| .cse0 v_DerPreprocessor_1) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_DerPreprocessor_2) |c_~#gl_list~0.base| .cse7) .cse0 v_DerPreprocessor_1) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_DerPreprocessor_2) |c_~#gl_list~0.base| .cse7)))) (let ((.cse4 (select .cse6 .cse0))) (and (= v_DerPreprocessor_1 .cse4) (= .cse5 .cse4) (= (select .cse6 |c_ULTIMATE.start_gl_insert_~node~1#1.base|) .cse2)))))))) (not (= |c_ULTIMATE.start_gl_insert_~node~1#1.base| |c_~#gl_list~0.base|)) (not (= (_ bv3 32) .cse0)) (= (_ bv3 32) |c_~#gl_list~0.base|) (= |c_~#gl_list~0.offset| (_ bv0 32))))) is different from true [2022-11-16 12:19:53,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:54,099 INFO L321 Elim1Store]: treesize reduction 18, result has 50.0 percent of original size [2022-11-16 12:19:54,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 618 treesize of output 456 [2022-11-16 12:19:54,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-16 12:19:54,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-16 12:19:54,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-16 12:19:54,564 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-16 12:19:54,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:19:56,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2013475385] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:56,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:19:56,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 29 [2022-11-16 12:19:56,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784416953] [2022-11-16 12:19:56,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:19:56,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 12:19:56,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:19:56,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 12:19:56,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=986, Unknown=96, NotChecked=66, Total=1260 [2022-11-16 12:19:56,290 INFO L87 Difference]: Start difference. First operand 372 states and 450 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:20:10,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:10,669 INFO L93 Difference]: Finished difference Result 577 states and 661 transitions. [2022-11-16 12:20:10,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:20:10,670 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 52 [2022-11-16 12:20:10,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:10,672 INFO L225 Difference]: With dead ends: 577 [2022-11-16 12:20:10,672 INFO L226 Difference]: Without dead ends: 577 [2022-11-16 12:20:10,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 97 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=304, Invalid=2203, Unknown=149, NotChecked=100, Total=2756 [2022-11-16 12:20:10,674 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 694 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 2145 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 3676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1456 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:10,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 1485 Invalid, 3676 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 2145 Invalid, 0 Unknown, 1456 Unchecked, 9.4s Time] [2022-11-16 12:20:10,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-11-16 12:20:10,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 473. [2022-11-16 12:20:10,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 385 states have (on average 1.3974025974025974) internal successors, (538), 443 states have internal predecessors, (538), 32 states have call successors, (32), 13 states have call predecessors, (32), 12 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-16 12:20:10,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 589 transitions. [2022-11-16 12:20:10,687 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 589 transitions. Word has length 52 [2022-11-16 12:20:10,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:10,687 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 589 transitions. [2022-11-16 12:20:10,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:20:10,688 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 589 transitions. [2022-11-16 12:20:10,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 12:20:10,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:10,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:20:10,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2022-11-16 12:20:10,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-16 12:20:11,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:20:11,097 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, failErr0ASSERT_VIOLATIONMEMORY_LEAK (and 68 more)] === [2022-11-16 12:20:11,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:11,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1989130177, now seen corresponding path program 1 times [2022-11-16 12:20:11,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:20:11,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676531901] [2022-11-16 12:20:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:11,098 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:20:11,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:20:11,099 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:20:11,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-16 12:20:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:20:11,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:20:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:20:11,669 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-16 12:20:11,669 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:20:11,670 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONMEMORY_LEAK (70 of 71 remaining) [2022-11-16 12:20:11,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 71 remaining) [2022-11-16 12:20:11,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 71 remaining) [2022-11-16 12:20:11,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 71 remaining) [2022-11-16 12:20:11,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 71 remaining) [2022-11-16 12:20:11,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 71 remaining) [2022-11-16 12:20:11,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 71 remaining) [2022-11-16 12:20:11,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 71 remaining) [2022-11-16 12:20:11,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 71 remaining) [2022-11-16 12:20:11,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 71 remaining) [2022-11-16 12:20:11,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 71 remaining) [2022-11-16 12:20:11,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 71 remaining) [2022-11-16 12:20:11,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 71 remaining) [2022-11-16 12:20:11,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 71 remaining) [2022-11-16 12:20:11,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 71 remaining) [2022-11-16 12:20:11,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 71 remaining) [2022-11-16 12:20:11,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 71 remaining) [2022-11-16 12:20:11,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 71 remaining) [2022-11-16 12:20:11,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 71 remaining) [2022-11-16 12:20:11,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 71 remaining) [2022-11-16 12:20:11,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 71 remaining) [2022-11-16 12:20:11,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 71 remaining) [2022-11-16 12:20:11,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 71 remaining) [2022-11-16 12:20:11,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 71 remaining) [2022-11-16 12:20:11,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 71 remaining) [2022-11-16 12:20:11,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 71 remaining) [2022-11-16 12:20:11,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 71 remaining) [2022-11-16 12:20:11,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 71 remaining) [2022-11-16 12:20:11,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 71 remaining) [2022-11-16 12:20:11,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 71 remaining) [2022-11-16 12:20:11,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 71 remaining) [2022-11-16 12:20:11,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 71 remaining) [2022-11-16 12:20:11,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location inspectErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 71 remaining) [2022-11-16 12:20:11,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 71 remaining) [2022-11-16 12:20:11,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 71 remaining) [2022-11-16 12:20:11,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 71 remaining) [2022-11-16 12:20:11,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 71 remaining) [2022-11-16 12:20:11,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 71 remaining) [2022-11-16 12:20:11,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 71 remaining) [2022-11-16 12:20:11,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 71 remaining) [2022-11-16 12:20:11,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 71 remaining) [2022-11-16 12:20:11,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 71 remaining) [2022-11-16 12:20:11,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 71 remaining) [2022-11-16 12:20:11,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 71 remaining) [2022-11-16 12:20:11,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 71 remaining) [2022-11-16 12:20:11,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 71 remaining) [2022-11-16 12:20:11,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 71 remaining) [2022-11-16 12:20:11,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 71 remaining) [2022-11-16 12:20:11,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 71 remaining) [2022-11-16 12:20:11,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 71 remaining) [2022-11-16 12:20:11,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 71 remaining) [2022-11-16 12:20:11,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 71 remaining) [2022-11-16 12:20:11,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 71 remaining) [2022-11-16 12:20:11,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 71 remaining) [2022-11-16 12:20:11,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 71 remaining) [2022-11-16 12:20:11,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 71 remaining) [2022-11-16 12:20:11,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 71 remaining) [2022-11-16 12:20:11,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 71 remaining) [2022-11-16 12:20:11,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 71 remaining) [2022-11-16 12:20:11,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 71 remaining) [2022-11-16 12:20:11,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 71 remaining) [2022-11-16 12:20:11,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 71 remaining) [2022-11-16 12:20:11,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 71 remaining) [2022-11-16 12:20:11,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 71 remaining) [2022-11-16 12:20:11,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 71 remaining) [2022-11-16 12:20:11,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 71 remaining) [2022-11-16 12:20:11,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 71 remaining) [2022-11-16 12:20:11,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE (3 of 71 remaining) [2022-11-16 12:20:11,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE (2 of 71 remaining) [2022-11-16 12:20:11,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE (1 of 71 remaining) [2022-11-16 12:20:11,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK (0 of 71 remaining) [2022-11-16 12:20:11,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-16 12:20:11,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:20:11,902 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:20:11,906 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:20:11,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:20:11 BoogieIcfgContainer [2022-11-16 12:20:11,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:20:11,968 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:20:11,968 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:20:11,968 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:20:11,969 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:16:23" (3/4) ... [2022-11-16 12:20:11,971 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 12:20:12,032 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:20:12,035 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:20:12,035 INFO L158 Benchmark]: Toolchain (without parser) took 230766.35ms. Allocated memory was 71.3MB in the beginning and 144.7MB in the end (delta: 73.4MB). Free memory was 51.6MB in the beginning and 59.8MB in the end (delta: -8.2MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2022-11-16 12:20:12,035 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 71.3MB. Free memory was 52.1MB in the beginning and 52.0MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:20:12,036 INFO L158 Benchmark]: CACSL2BoogieTranslator took 926.61ms. Allocated memory is still 71.3MB. Free memory was 51.4MB in the beginning and 31.0MB in the end (delta: 20.4MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2022-11-16 12:20:12,036 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.54ms. Allocated memory is still 71.3MB. Free memory was 31.0MB in the beginning and 51.9MB in the end (delta: -20.9MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2022-11-16 12:20:12,036 INFO L158 Benchmark]: Boogie Preprocessor took 43.31ms. Allocated memory is still 71.3MB. Free memory was 51.9MB in the beginning and 49.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:20:12,036 INFO L158 Benchmark]: RCFGBuilder took 1286.34ms. Allocated memory was 71.3MB in the beginning and 98.6MB in the end (delta: 27.3MB). Free memory was 49.1MB in the beginning and 58.7MB in the end (delta: -9.7MB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. [2022-11-16 12:20:12,037 INFO L158 Benchmark]: TraceAbstraction took 228338.02ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 58.2MB in the beginning and 63.9MB in the end (delta: -5.8MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2022-11-16 12:20:12,037 INFO L158 Benchmark]: Witness Printer took 67.22ms. Allocated memory is still 144.7MB. Free memory was 63.9MB in the beginning and 59.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:20:12,037 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 71.3MB. Free memory was 52.1MB in the beginning and 52.0MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 926.61ms. Allocated memory is still 71.3MB. Free memory was 51.4MB in the beginning and 31.0MB in the end (delta: 20.4MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.54ms. Allocated memory is still 71.3MB. Free memory was 31.0MB in the beginning and 51.9MB in the end (delta: -20.9MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.31ms. Allocated memory is still 71.3MB. Free memory was 51.9MB in the beginning and 49.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1286.34ms. Allocated memory was 71.3MB in the beginning and 98.6MB in the end (delta: 27.3MB). Free memory was 49.1MB in the beginning and 58.7MB in the end (delta: -9.7MB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. * TraceAbstraction took 228338.02ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 58.2MB in the beginning and 63.9MB in the end (delta: -5.8MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. * Witness Printer took 67.22ms. Allocated memory is still 144.7MB. Free memory was 63.9MB in the beginning and 59.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 840]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L850] struct list_head gl_list = { &(gl_list), &(gl_list) }; VAL [gl_list={3:0}] [L949] CALL gl_read() [L909] CALL gl_insert(__VERIFIER_nondet_int()) [L899] struct node *node = malloc(sizeof *node); [L900] COND FALSE !(!node) VAL [\old(value)=0, gl_list={3:0}, node={6:0}, value=0] [L902] node->value = value VAL [\old(value)=0, gl_list={3:0}, node={6:0}, value=0] [L903] CALL list_add(&node->linkage, &gl_list) VAL [gl_list={3:0}] [L890] EXPR head->next VAL [gl_list={3:0}, head={3:0}, head={3:0}, head->next={3:0}, new={6:4}, new={6:4}] [L890] CALL __list_add(new, head, head->next) [L878] next->prev = new VAL [gl_list={3:0}, new={6:4}, new={6:4}, next={3:0}, next={3:0}, prev={3:0}, prev={3:0}] [L879] new->next = next VAL [gl_list={3:0}, new={6:4}, new={6:4}, next={3:0}, next={3:0}, prev={3:0}, prev={3:0}] [L880] new->prev = prev VAL [gl_list={3:0}, new={6:4}, new={6:4}, next={3:0}, next={3:0}, prev={3:0}, prev={3:0}] [L881] prev->next = new VAL [gl_list={3:0}, new={6:4}, new={6:4}, next={3:0}, next={3:0}, prev={3:0}, prev={3:0}] [L890] RET __list_add(new, head, head->next) [L903] RET list_add(&node->linkage, &gl_list) VAL [\old(value)=0, gl_list={3:0}, node={6:0}, value=0] [L904] (&node->nested)->next = (&node->nested) VAL [\old(value)=0, gl_list={3:0}, node={6:0}, value=0] [L904] (&node->nested)->next = (&node->nested) VAL [\old(value)=0, gl_list={3:0}, node={6:0}, value=0] [L909] RET gl_insert(__VERIFIER_nondet_int()) [L911] COND FALSE !(__VERIFIER_nondet_int()) [L949] RET gl_read() [L950] CALL inspect(&gl_list) VAL [gl_list={3:0}, head={3:0}] [L853] COND FALSE !(!(head)) VAL [gl_list={3:0}, head={3:0}, head={3:0}] [L854] EXPR head->next VAL [gl_list={3:0}, head={3:0}, head={3:0}, head->next={6:4}] [L854] COND FALSE !(!(head->next != head)) [L855] EXPR head->prev VAL [gl_list={3:0}, head={3:0}, head={3:0}, head->prev={6:4}] [L855] COND FALSE !(!(head->prev != head)) [L856] EXPR head->prev VAL [gl_list={3:0}, head={3:0}, head={3:0}, head->prev={6:4}] [L856] head = head->prev [L857] COND FALSE !(!(head)) VAL [gl_list={3:0}, head={3:0}, head={6:4}] [L858] EXPR head->next VAL [gl_list={3:0}, head={6:4}, head={3:0}, head->next={3:0}] [L858] COND FALSE !(!(head->next != head)) [L859] EXPR head->prev VAL [gl_list={3:0}, head={3:0}, head={6:4}, head->prev={3:0}] [L859] COND FALSE !(!(head->prev != head)) [L860] const struct node *node = ((struct node *)((char *)(head)-(unsigned long)(&((struct node *)0)->linkage))); VAL [gl_list={3:0}, head={3:0}, head={6:4}, node={6:0}] [L861] COND FALSE !(!(node)) VAL [gl_list={3:0}, head={3:0}, head={6:4}, node={6:0}] [L862] EXPR node->nested.next VAL [gl_list={3:0}, head={6:4}, head={3:0}, node={6:0}, node->nested.next={6:12}] [L862] COND FALSE !(!(node->nested.next == &node->nested)) [L863] EXPR node->nested.prev VAL [gl_list={3:0}, head={3:0}, head={6:4}, node={6:0}, node->nested.prev={0:0}] [L863] COND TRUE !(node->nested.prev == &node->nested) [L863] CALL fail() VAL [gl_list={3:0}] [L840] reach_error() VAL [gl_list={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 918]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 918]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 918]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 947]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 216 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 228.2s, OverallIterations: 30, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 109.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8521 SdHoareTripleChecker+Valid, 82.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8437 mSDsluCounter, 25993 SdHoareTripleChecker+Invalid, 74.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 8589 IncrementalHoareTripleChecker+Unchecked, 21540 mSDsCounter, 680 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20213 IncrementalHoareTripleChecker+Invalid, 29482 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 680 mSolverCounterUnsat, 4453 mSDtfsCounter, 20213 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1097 GetRequests, 604 SyntacticMatches, 12 SemanticMatches, 481 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 2633 ImplicationChecksByTransitivity, 87.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=473occurred in iteration=29, InterpolantAutomatonStates: 331, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 29 MinimizatonAttempts, 856 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 5.6s SatisfiabilityAnalysisTime, 101.7s InterpolantComputationTime, 926 NumberOfCodeBlocks, 926 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 842 ConstructedInterpolants, 123 QuantifiedInterpolants, 23084 SizeOfPredicates, 477 NumberOfNonLiveVariables, 5636 ConjunctsInSsa, 977 ConjunctsInUnsatCore, 32 InterpolantComputations, 26 PerfectInterpolantSequences, 6/70 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 12:20:12,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c8bffe1-ffc2-4315-9504-65495f33390f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)